A 15-part ordered learning path covering installation, packages, networking, users, permissions, services, performance, disks, LVM, scheduling, SSH, firewalld, SELinux, logging and patching.
Oracle Linux is a enterprise-grade operating system based on Red Hat Enterprise Linux (RHEL). It’s free to download and use, and it’s optimized for Oracle products — but you can use it for any Linux server or lab setup.In this blog, we’ll go through how to install Oracle Linux...
After installing Oracle Linux, one of the first things every system administrator needs to learn is how to manage software packages — installing, updating, and removing applications.Oracle Linux uses the DNF package manager (an improved version of YUM). It handles dependencies...
Network configuration is a fundamental part of Linux administration. Whether you’re managing a server or a virtual machine, you’ll often need to assign IP addresses, configure DNS, and manage connections.In Oracle Linux, you can manage networks using: • NetworkManager command-...
User and group management is one of the most important skills for any Linux system administrator.It’s essential for controlling who can access the system, what permissions they have, and how they interact with files and services.In this blog, we’ll cover how to create, modify,...
File permissions and ownership are at the heart of Linux security and system management. Every file and directory in Oracle Linux has a set of permissions and ownership attributes that determine who can read, write, or execute it.In this blog, you’ll learn how to: • View and u...
Modern Oracle Linux systems use systemd as their default system and service manager. The systemctl command is your main tool to control services - starting, stopping, enabling, and checking their status.In this blog, you’ll learn how to use systemctl effectively to manage serv...
Monitoring system performance is one of the key responsibilities of a Linux administrator.It helps you understand how your server is performing, detect bottlenecks, and troubleshoot issues before they become serious problems.In this blog, you’ll learn how to use essential comm...
Every Linux system administrator must know how to manage disks — from creating partitions to formatting and mounting file systems.In Oracle Linux, these tasks are commonly done using tools like lsblk, fdisk, parted, and mkfs.In this blog, we’ll walk through how to: • Identify ...
Logical Volume Management (LVM) gives you flexibility and control over disk storage.Instead of being locked into fixed partitions, LVM lets you resize, extend, or combine storage dynamically which is perfect for growing environments or virtualized systems.In this blog, you’ll ...
IntroductionAutomation saves time and reduces human error. In Oracle Linux, you can schedule repetitive tasks like backups, log cleanup, or updates using cron or systemd timers.In this blog, you’ll learn how to: • Schedule jobs using cron • Use at for one-time tasks • Create a...
IntroductionSSH is the most common method to access and manage Linux servers remotely.It allows encrypted communication between your local system and the Oracle Linux server, making it both powerful and secure - if configured correctly.In this blog, you’ll learn how to: • Inst...
A firewall protects your Oracle Linux server from unauthorized access.firewalld is a flexible firewall tool built on iptables/nftables.It uses zones and services to define different trust levels.In this blog, you’ll learn to:• Check and start firewalld• Allow or block services...
SELinux is an additional security layer built into Oracle Linux.It enforces access control policies that limit what processes can do, even if an attacker gains access to your system.While firewalld controls network access, SELinux controls system-level access between users, fi...
Logs are your system’s black box.they record everything that happens under the hood: service activity, authentication, kernel messages, and more.Oracle Linux uses two main logging systems: • systemd-journald – modern binary log manager used with journalctl • rsyslog – traditio...
Keeping your Oracle Linux system up to date is essential for security, stability, and performance.Regular updates fix vulnerabilities, improve compatibility, and ensure your server runs smoothly.In this blog, you’ll learn how to: • Check for and install updates using dnf • Man...
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